Stopper



duit-fed' tatrf @Hunt @Ww Leners Patent No. 93,793, ma August 17, 1869.

DIIPROVED CHA'IN- STOPPBR.

The Schedule referred to in these Letters Patent and making part of the sama.

To all persons to whom. these presents maycome:

Be it known that I, WILLIAM I). BAKER, of East Abington, of the county of Plymouth, and State of Massachusetts, have invented a new and useful' Chain- Stopp'er; and do hereby declare the same to be fully iescribed in the following specification, and represented .n the accompanying drawings, of Wllich- Figure 1 is a top view,

Figure 2, a longitudinal section,

Figures Band 4, end elevations, and

Figure 5, a rear'elevation 'of it.

A denotes a shaft, havings its journals a a supported' in bearings or standards b b.

A groove, d, is made helically around the saidshaft, and there isha passage, c, leading from such groove through one end of the shaft, suoli end being chambered or formed with atrumpet-month, as shown at e.'

Furthermore, on a rail or bar, f, arranged alongside of the helix-groove, and supported by the Ystandards b b, is a slider, B, which slides freely on the bar, proieets into the helical groove, and is provided with an eye, h., to receive the anchor-chain i, which, afterpassing through the eye, is led through the passage 1.'.

' A ratchet,;7:, is iixed on the opposite end of the f shaft. A lever, l, pivoted to the shaft, carries an impellingpawl,'fm, to act withthe ratchet.

Furthermore, a retaininglpawl, n, pivoted to the next adjacent standard, also engages with the ratchet.

By means of the lever, and the impelling-pa'wl and I claim-the shaft A, as made'witli the helix-groove fl extending around it, and with the passage c leading from such groove through one end of the shaft,l as specified.

I also claim the combination and arrangement of the guideblock B, and its supporting-bar f, with the chainstopper shaft A, made with the helix-groove, and .the passage leading therefrom, as explained.

I also claim,lin combination with the movable chainguide B, and chain-stopper shaft A, made with a helixgroove, d, and a passage, c, leading therefrom, in manner as set forth, a'mechanistn substantially as described, or its equivalent, for revolving the shaft, and maintaining it in position, as explained, such mechanism being the ratchet, the lever, and pawls, applied as described.

` WILLIAM D. BAKER.

1 Witnesses: B; HJEDDY, S. N. PIPER. 

